American Journal of Obstetrics and Gynecology
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 966-971
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 950-954
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 767-775
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 926-930
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 879-884
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 850-855
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 841-849
American Journal of Obstetrics and Gynecology > 2000 > 182 > 4 > 856-859